962 resultados para Ce^3
Resumo:
PDP(),VUV,VUV,VUV.,.:1.VUV.2.f-d,.3.Ce<'3+>,Tb<'3+>.4.Dy<'3+>Dy<'3+>f-d.5.LaPO<,4>ABLa(PO<,4>)<,2>(A=K,Na;B=Mg,Zn),Ce<'3+>5f-d,Tb<'3+>5f-d,CeTbVUV.6.f-d.7.VUV,,.8.Eu<'3+>ce<'3+>,La<,2>CaB<,10>O<,19>Ca<'2+>La<'3+>,.9.,,,.10.UVEu<'3+>,Y<,2>O<,3>:Eu,Y<,2>O<,3>.
Resumo:
LnAlO_3:Re~(3+)Y-Ba-Cu-OY-Ba-Cu-O1Ba-Y-Cu-OBaYCu2Y-Ba-Cu-O3YBaCuBa0.8-2.3; Y0.4-3Cu2.5-5CuYBa4Y_1Ba_(1.8)Mo_(0.2)Cu_3O_y (M = Sr, Na, K, Cs)MSr~(2+)Ba~(2+)SrTcNa~+K~+, Cs~+Na~+, K~+, Cs~+TcY_1Ba_(1.8)M_(0.2)Cu_3O_y (M = Na~+, K~+, Cs~+)M~+5Y_1Ba~(2-x)K_xCu_3O_yKBaK~+Ba~(2+)K~+BaSrK(0.1-0.5)6Y_1Ba_2Cu_3O_yK3KCuXKCuY_1Ba_2Cu_3O_(7-)LnAlO_3Ce~(3+), Tb~(3+), Dy~(3+)Ce-Tb, Ce-DyBuF_2LnAlO_3 (Ln = La, Gd, Y)LnAlO_3Ce~(3+), Tb~(3+), Dy~(3+)Ce-Tb, Ce-DyLnAlO_3Ln~(3+)LaAlO_3, GdAlO_3, YAlO_3LnAlO_3
Resumo:
1.IA_ie~(-t/i)c_1/c_2=(a_1_1_2_2)/(_2_2_1_1)C_1C_2AA101AKCTTK3Eu~(3+), Eu~(2+), Ce~(3+), Dy~(3+), Nd~(3+), Tb~(3+)10~(-8)10~(-3)O_2(~1_g)
Resumo:
Cu(III)1.Na_4H[Cu(H_2TeO_6)_2]17H_2ONa_4K[Cu(HIO_6)_2]12H_2OCu(III)2.Cu(II)Cu(III)Cu2pCu(III)d-dCu(II)d-d3.O_3Cu(II)Cu(III)Ba_4K[Cu(H_2TeO_6)_2] (OH)_46H_2OBa_3K[Cu(HIO_6)_2] (KOH)_(0.5)(OH)_28H_2OCu2p XPS4.BaCuO_(2.5)Cu(III) ESRCu2p XPS5.Na_4K[Cu(HIO_6)_2]12H_2OBaCuO_(2.5)Cu2p XPSYBa_2Cu_3O_(7-5)6.CuIIICuYBCO1.BiF_3(Bi)/Ce_(0.95)Ca_(0.05)F_(2.95)/Pt130 EMFNernst100Pa1000Pa15516Pa1000PaEMF-116mV/decade, 2.La_(1-x)Pb_xF_(3-x)(X = 0.00 0.15)La_(0.95)Pb_(0.05)F_(2.95)LaF_3La_(0.95)Pb_(0.05)F_(2.95)PdPtBiF_3(Bi)PbF_2(Pb)BiF_3(Bi)/La_(0.95)Pb_(0.05)F_(2.95)/Pt150 EMF1gPo_2Nernst150 80100Pa1000Pa7515EMFE=E_o-96lgP_(H2)(mV)CO1000Pa3.Ln_(1-x)Pb_xF_(3-x)(Ln=CePrNdGdDyHoYb)PLnLnF_3La~(3+)Ce~(3+)Pr~(3+)Nd~(3+)Pb~(2+)LnF_3PbF_2Gd~(3+)Dy~(3+)Ho~(3+)Yb~(3+)Pb~(2+)LnF_3PbF_2
Resumo:
18Ln-LiLiLn(-C_3H_5)_4 nD(Ln=LaTb, n=3; Ln=YDy, n=2.5; Ln=CePrNdSmGdEr, n=2; D=Ln-Mg-(-C_3H_5)_2CnCl_5Mg_2(tmed)_2 (Ln=CeNd)(-C_4H_7)_2LnCl_5Mg_2(tmed)_2 (Ln=LaCeNd; C_4H_7=i-C_4H_7)Ln-Al[(CF_3CO_2)_3LnHAlR_22THF]_2 (Ln=YNd, R=i-Bu; Ln=Eu, R=Et)XrayLiCe(-C_3H_5)_44D[(CF_3CO_2)_3YHAl(i-Bu)_2 2THF]_2[(CF_3CO_2)_3NdHAl(i-Bu)_2 2THF]_2[(CF_3CO_2)_3EuHAlEt_22THF]_2[(CF_3CO_2)_3YHAl(i-Bu)_22THF]_2LiLn(-C_3H_5)_4 nDNMRCHNMR[(CF_3CO_2)_3YHAl(i-Bu)_22THF]_26CF_3CO_2~-2CHLn-AlLiLn(-CC_3H_5)_4nDY(-C_3H_5)_2CeCl_5Mg_2(tmed)_2MMA(-C_4H_7)_2LnCl_5Mg_2(tmed)_2LiCe(-C_3H_5)_44D(-C_3H_5)_2CeCl_5Mg_2(tmed)_2(-CH_2-CH=CH_2)Ce~(3+)(-C_3H_5)_2CeCl_5Mg_2(tmed)_2-Al(i-Bu)_3(Al/Ce()=4))CH_3-CH=CH_2i-Bu-Ln(CF_3CO_2)_3-AlEt_3THFTHFY(CF_3CO_2)_3-HAl(i-Bu)_2-ECHTHF[(CF_3Co_2)YHAl(i-Bu)_22THF]_2ECHTHFY(CF_3CO_2)_3-HAl(i-Bu)_2-ECH[(CF_3CO_2)_3YHA(i-Bu)_22THF]_2[(CF_3CO_2)_3EuHAlEt_22THF]_2ECHMMAPMMA(rr)76.5
Resumo:
CeCl_3NaClLC_4Al-Zn5.0/7.0-Mg1.3/2.8-Cu1.4/2.0-Cr0.10/0.25)LC_4NaClNaClNaClLC_4NaClCl~-LC_4CeCl_3+NaClCe(+3)H_2O_2Ce(+3)Ce(+4)CeO_22Ce(OH)_3 + H_2O_2 = 2CeO_2 + 4H_2OH_2O_2Ce(+3)Ce(+4)H_2O_2H_2O_2LC_4LaCl_3+NaClLa(+3)La(+3)H_2O_2OH~-H_2O_2
Resumo:
BSBaF_2BaF_2:CeTSLBaF_2TSL381K402KCeTSLKMgF_3KCaF_3BaLiF_3TSLESRKMgF_3KMgF_3KCaF_3Al~(3+)FBaLiF_3La~3Yb~(3+)FH10~8RadBaLiF_3FAFXESREuEu~(3+)KMgF_3KMgF_3:Eu~(2+)0.29mol%BaLiF_3:Eu~(2+)PSLXBSKMgF_3BaLiF_3XLa~(3+)Tm~(3+)KMgF_3K~+Mg~(2+)SEMH_2SO_4cf KMgF_3BaLiF_3LaF_3:Ce~(3+)Ce~(3+)Ce~(3+)BSCeF_3
Resumo:
CeO_2/Si100nm2.455CeO_2(PL)65nmXRDXPSPLCeCeCe~(4+)Ce~(3+)PL
Resumo:
(CE)[1,2 ] . ,CE (1 0 - 12 1 0 - 9L ) , . (FASI) CE[3] , CE ,[4 ] . [Ru(bpy) 2 + 3] (ECL ) CE (CE-ECL) . ,[5 7] . , , . TPA , 1 0 0 , Pro , , 1 0 46 . (TPA) (Pro) .1 TPA(Acros ) , Pro(...
Resumo:
CdSiO_3:RE~(3+)(RE=Y,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu)XRD10503CdSiO_3Y~(3+),La~(3+),Gd~(3+),Lu~(3+)Ce~(3+),Nd~(3+),Ho~(3+),Er~(3+),Tm~(3+),Yb~(3+)420 nm, Pr~(3+),Sm~(3+),Eu~(3+),Tb~(3+),Dy~(3+),420 nm,
Resumo:
The measurements of VUV-UV photoluminescence emission (PL) and photoluminescence excitation (PLE) spectra of rare earth ions activated strontium orthophosphate [Sr-3(PO4)(2):RE, RE = Ce, Sm, Eu, Tb] are performed. Whenever the samples are excited by VUV or UV light, the typical emission of Ce-3+,Ce- Sm3+, Eu3+, Eu2+ and Tb3+ ions can be observed in PL spectra, respectively. The charge transfer bands (CTBs) of Sm3+ and Eu3+ are found, respectively, peaking at 206 and 230nm. The absorption bands peaking in the region of 150-160 nm are assigned to the host lattice sensitization bands, i.e., the band-to-band transitions of PO43- grouping in Sr-3(PO4)(2). It is speculated that the first f-d transitions of Sm3+ (Eu3+), and the CTB of Tb3+ are, respectively, located around 165 (14 3) and 167 urn by means of VUV-UV PLE spectra and relational empirical formula, these f-d transitions or CT bands are included in the bands with the maxima at 150-160 nm, respectively. The valence change of europium from trivalent to divalent in strontium orthophosphate prepared in air is observe by VUV-UV PL and PLE spectra.
Resumo:
The luminescence properties of Ce3+, Gd3+, and Tb3+ have been investigated in the compound CaAl2B2O7. The single excitation band peaking at about 320 nm and single emission band peaking at about 384 nm for Ce3+, without the characteristic doublet, are attributed to the extensive crystal-field splitting of 4f ground state. The emission of Gd3+ consists of well-known sharp lines and two weak bands around 319.5 and 325 nm. These bands are due to the coupling of Gd3+ with BO33- groups. The green emission of Tb3+ is considerably sensitized by Ce3+. Energy transfer from Ce3+ to Tb3+ in CaAl2B2O7 is efficient. (C) 1997 Elsevier Science Ltd.
Resumo:
LaP_3O_9:CeGdTb.XLaP_3O_9,,,a=11.19(?),b=8.54(?),c=7.28(?).Ce~(3+),Ce~(3+)Gd~(3+),,Ce~(3+)Tb~(3+),Tb~(3+),LaP_3O_9:CeTb.Ce-TbGd,Gd~(3+).Ce~(3+),Ce~(3+)Gd~(3+),Ce~(3+)Tb~(3+).
Resumo:
Ce_xGd_(1-x)P_5O_(14), P2_1/c, Gd ,(1-x), Gd~(3+)314nm Ce~(3+), Ce~(3+) Gd~(3+)
Resumo:
With the method of high temperature solid state reaction and stockbarger, we synthesized a series of powder phosphors of KMgF3-Ce3+, KMg1-alphaMalphaF3-Ce3+(M = Be2+, Ca2+) and the single crystal of KMgF3-Ce3+. We tested their excitation and emission spectra, found two emission centers in KMgF3-Ce3+ and demonstrated that they resulted from different charge compensating ways. By the structural analysis on KMgF3-Ce-3+ from a four-cycle diffractometer and spectral analysis on KMg1-alphaMalphaF3-Ce3+(M = Be2+, Ca2+), we deduced that Ce3+ ion only.substituted K+ site in KMgF3.
